Heavy duty Powerful piston pump is efficient, dependable, yet quiet. The lightweight and attractive unit features spacious storage for accessories and a built in handle for portability. It weight's only 3.75 pounds and delivers a maximum of 40 psi pressure and 14 LPM flow. It's special 45 degree angle delivery allows patient to recline during treatment. This fantastic Nebulizer Unit comes with 2 FREE Replacment filters and a Nebulizer Kit for treatments!